Adjustable mount

• US 4,562,658 A
• Filed: 10/04/1983
• Issued: 01/07/1986
• Est. Priority Date: 10/04/1983
• Status: Expired due to Term

• Current Assignee: Tetra Pharmaceuticals Pty Limited
• Original Assignee: Tetra Pharmaceuticals Pty Limited
• Inventors: Govett, Peter J.
• Primary Examiner(s): Jordan, Charles T.
• Application Number:
  US06/539,061
• Time in Patent Office: 826 Days
• Field of Search: 42/1 ST, 33/245, 33/246, 33/247, 33/248, 33/249, 33/250
• US Class Current: 42/125
• CPC Class Codes: F41G 11/001 Means for mounting tubular or beam shaped sighting or aiming devices on firearms

Abstract

A scope mount for a rifle has a mounting stud 23 which is held in position by the engagement of its lower conical face 25 with an aperture 30 in the mounting plate 10. The stud 23 has a groove 27 in part defined by an upper conical face 28. A clamp 14 is secured to the mounting stud 23 by adjustment screws 22, 22a which have conical end faces that engage the conical face 28 of the stud 23 to draw the clamp down onto the mounting plate. Recoil forces are transferred to the clamp 14 through the vertical faces of the central portion 26 and head 29 of the stud 23 which engage the wall of the aperture 20 in the boss 19 of the clamp 14.

Claims

1. A mount for the attachment of at least one sight to a rifle, said mount comprising:

(a) a mounting stud adapted to be secured to the rifle, said mounting stud having a groove portion in part defined by a conical face and having a cylindrical surface on each side of said groove portion;

(b) a body portion having a first aperture sized and shaped so that the opposing walls of said first aperture engage said cylindrical surfaces on said mounting stud in the direction parallel to the axis of the rifle, but so that said body portion can move freely relative to said mounting stud in the direction transverse to the axis of the rifle; and

(c) a pair of opposed adjustment screws threaded through said body portion in the direction transverse to the axis of the rifle and extending into said first aperture, said pair of opposed adjustment screws engaging with opposite sides of said conical face of said mounting stud so that loosening of one of said pair of opposed adjustment screws and tightening of the other one of said pair of opposed adjustment screws will move said body portion in relation to said mounting stud in the direction transverse to the axis of the rifle, each one of said pair of opposed adjustment screws having a conical end face which engages with said conical face of said mounting stud so that, when said pair of adjustment screws are tightened, said body portion is drawn down onto the rifle.

2. A mount according to claim 1 wherein the mounting stud is rigidly secured to the rifle.

3. A mount for a rifle according to claim 1 wherein said mounting stud has a conical mounting face adjacents its base and the mount further includes a mounting plate for securing said mounting stud to the rifle, said mounting plate having a second aperture for receiving said mounting stud which is correspondingly shaped thereto so that, when said pair of opposed adjustment screws are tightened, said mounting stud is firmly engaged in said mounting plate and said body portion is drawn down onto said mounting plate.

4. A mount according to claim 1 wherein said body portion is a first portion of a split ring clamp and the mount further includes a second portion of said split ring clamp and means for securing said first and second portions of said split ring clamp together.

5. A mount according to claim 3 wherein said body portion is a first portion of a split ring clamp and the mount further includes a second portion of the said split ring clamp and means for securing said first and second portions of said split ring clamp together.

6. A mount according to claim 5 wherein there are two split ring clamps spaced along said mounting plate each retained on said mounting plate by its own mounting stud.

7. A mount for the attachment of at least one sight to a rifle, said mount comprising:

(a) a mounting stud adapted to be secured to the rifle, said mounting stud having;

(i) a cylindrical base;

(ii) a conical mounting face concentric to and projecting integrally from said cylindrical base;

(iii) a cylindrical central portion concentric to and projecting integrally from said conical mounting face;

(iv) a cylindrical stem concentric to and projecting integrally from said cylindrical central portion;

(v) a conical adjustment face concentric to and projecting integrally from said cylindrical stem; and

(vi) a cylindrical head concentric to and and projecting integrally from said conical adjustment face;

(b) a body portion having a first aperture sized and shaped so that opposing walls of said first aperture engage said cylindrical central portion and said cylindrical head on said mounting stud in the direction parallel to the axis of the rifle, but so that said body portion can move freely relative to said mounting stud in the direction transverse to the axis of the rifle; and

(c) a pair of opposed adjustment screws having tapered end faces, said pair of opposed adjustment screws being threaded through said body portion in the direction transverse to the axis of the rifle and perpendicular to the axis of said mounting stud, said pair of opposed adjustment screws extending into said first aperture and said tapered end faces of said pair of opposed adjustment screws engaging with opposite sides of said conical adjustment face of said mounting stud,

whereby;

(d) when both of said pair of opposed adjustment screws are tightened against said conical adjustment face of said mounting stud, said body portion is drawn down onto the rifle and,

(e) when one of said pair of opposed adjustment screws is loosened and the other one of said pair of opposed adjustment screws is correspondingly tightened, said body portion is moved relative to said mounting stud in the direction transverse to the axis of the rifle.

8. A mount as recited in claim 7 wherein said mounting stud is rigidly secured to the rifle.

9. A mount as recited in claim 7 and further comprising a mounting plate for securing said mounting stud to the rifle, said mounting plate having a second aperture sized, shaped, and positioned to receive and closely engage said cylindrical base, said conical mounting face, and a portion of said cylindrical central portion of said mounting stud, whereby, when both of said pair of opposed adjustment screws are tightened against said conical adjustment face of said mounting stud, said mounting stud is drawn firmly against corresponding surfaces of said second aperture and said body portion is drawn down onto said mounting plate.

10. A mount as recited in claim 9 wherein said body portion is a first portion of a split ring clamp and the mount further includes a second portion of said split ring clamp and means for securing said first and second portions of said split ring clamp together.

11. A mount as recited in claim 10 wherein there are two split ring clamps spaced along said mounting plate each retained on said mounting plate by its own mounting stud.

12. A mount as recited in claim 7 wherein said body portion is a first portion of a split ring clamp and the mount further includes a second portion of said split ring clamp and means for securing said first and second portions of said split ring clamp together.